third_party/WebKit/Source/modules/canvas2d/CanvasGradient.h

/*
 * Copyright (C) 2006, 2007, 2008 Apple Computer, Inc.  All rights reserved.
 * Copyright (C) 2007 Alp Toker <alp@atoker.com>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef CanvasGradient_h
#define CanvasGradient_h

#include "modules/ModulesExport.h"
#include "platform/bindings/ScriptWrappable.h"
#include "platform/graphics/Gradient.h"
#include "platform/heap/Handle.h"
#include "platform/wtf/Forward.h"

namespace blink {

class ExceptionState;

class MODULES_EXPORT CanvasGradient final
    : public GarbageCollectedFinalized<CanvasGradient>,
      public ScriptWrappable {
  DEFINE_WRAPPERTYPEINFO();

 public:
  static CanvasGradient* Create(const FloatPoint& p0, const FloatPoint& p1) {
    return new CanvasGradient(p0, p1);
  }
  static CanvasGradient* Create(const FloatPoint& p0,
                                float r0,
                                const FloatPoint& p1,
                                float r1) {
    return new CanvasGradient(p0, r0, p1, r1);
  }

  Gradient* GetGradient() const { return gradient_.Get(); }

  void addColorStop(float value, const String& color, ExceptionState&);

  bool IsZeroSize() const { return is_zero_size_; }

  DEFINE_INLINE_TRACE() {}

 private:
  CanvasGradient(const FloatPoint& p0, const FloatPoint& p1);
  CanvasGradient(const FloatPoint& p0,
                 float r0,
                 const FloatPoint& p1,
                 float r1);

  RefPtr<Gradient> gradient_;
  const bool is_zero_size_;
};

}  // namespace blink

#endif  // CanvasGradient_h